$(document).ready(function () {
    var GobackTimer = $('.exit .autotime span').text(); //提取exit块中span的数字
    var countdown = null;

    function timeShow() {
        GobackTimer--;
        $('.exit .autotime span').text(GobackTimer);
        if (GobackTimer < 1) {
            clearInterval(countdown);
            //$(".countdown").html("倒计时结束！！");
            window.opener = null;
            window.location.href = "cslntouch.aspx";
        }
    };
    countdown = setInterval(timeShow, 1000);
});
